<template>
    <view
        :class="`wd-table-col ${fixed ? 'wd-table-col--fixed' : ''} ${isLastFixed && isDef(table) && table.state.scrollLeft ? 'is-shadow' : ''}`"
        :style="columnStyle"
    >
        <view
            :class="`wd-table__cell ${stripe && isOdd(index) ? 'is-stripe' : ''} ${border ? 'is-border' : ''} is-${align}`"
            v-for="(row, index) in column"
            :key="index"
            :style="cellStyle"
            @click="handleRowClick(index)"
        >
            <slot
                name="value"
                v-if="$slots.value"
                :row="getScope(index)"
                :index="index"
            ></slot>
            <text
                :class="`wd-table__value ${ellipsis ? 'is-ellipsis' : ''}`"
                v-else
            >
                {{ row }}
            </text>
        </view>
    </view>
</template>

<script lang="ts">
export default {
    name: 'wd-table-col',
    options: {
        addGlobalClass: true,
        virtualHost: true,
        styleIsolation: 'shared',
    },
}
</script>
<script lang="ts" setup>
import { type CSSProperties, computed, ref } from 'vue'
import { addUnit, isDef, objToStyle, isOdd, isFunction } from '../common/util'
import { tableColumnProps, type SortDirection } from './types'
import { useParent } from '../composables/useParent'
import { TABLE_KEY } from '../wd-table/types'

const props = defineProps(tableColumnProps)

const { parent: table, index: columnIndex } = useParent(TABLE_KEY)

const sortDirection = ref<SortDirection>(0) // 排序方向

// 是否开启斑马纹
const stripe = computed(() => {
    if (isDef(table)) {
        return table.props.stripe
    } else {
        return false
    }
})

/**
 * 是否有边框
 */
const border = computed(() => {
    if (isDef(table)) {
        return table.props.border
    } else {
        return false
    }
})

/**
 * 是否超出省略
 */
const ellipsis = computed(() => {
    if (isDef(table)) {
        return table.props.ellipsis
    } else {
        return false
    }
})

/**
 * 是否最后一个固定元素
 */
const isLastFixed = computed(() => {
    let isLastFixed: boolean = false
    if (props.fixed && isDef(table)) {
        isLastFixed = table.getIsLastFixed(props)
    }
    return isLastFixed
})

/**
 * 列样式
 */
const columnStyle = computed(() => {
    let style: CSSProperties = {}
    if (isDef(props.width)) {
        style['width'] = addUnit(props.width)
    }
    if (props.fixed && isDef(table) && isFunction(table.getFixedStyle)) {
        style = table.getFixedStyle(columnIndex.value, style)
    }
    return style
})

/**
 * 单元格样式
 */
const cellStyle = computed(() => {
    let style: CSSProperties = {}
    const rowHeight: string | number = isDef(table) ? table.props.rowHeight : 50 // 自定义行高
    if (isDef(rowHeight)) {
        style['height'] = addUnit(rowHeight)
    }
    if (props.fixed && isDef(table) && isFunction(table.getFixedStyle)) {
        style = table.getFixedStyle(columnIndex.value, style)
    }
    return objToStyle(style)
})

// 列数据
const column = computed(() => {
    if (!isDef(table)) {
        return []
    }

    const column: any[] = table.props.data.map((item) => {
        return item[props.prop]
    })
    return column
})

/**
 * 行点击事件
 * @param index 行下标
 */
function handleRowClick(index: number) {
    if (!isDef(table)) {
        return
    }
    isFunction(table.rowClick) && table.rowClick(index)
}

// 行数据
function getScope(index: number) {
    if (!isDef(table)) {
        return {}
    }
    return table.props.data[index] || {}
}

defineExpose({ sortDirection: sortDirection })
</script>

<style lang="scss" scoped>
@import './index.scss';
</style>
